William d



(No Model.)

W. D. CARTER.

SCREW PRESS.

10,252,075 Patented Jan. 10,1882.

i l :'zmwu un D l T" I 45 the can.

UNITED STATES PATENT OFFICE.

WILLIAM D. CARTER, OF BROOKLYN, ASSIGNOR TO LAWSON VALENTINE, HENRY O. VALENTINE, AND CHARLES S. HOHER, JR., OF NEW YORK, N.Y.

SCREW-PRESS.

SPECIFICATION forming part of Letters Patent No. 252,075, dated January 10, 1882.

' Application tiled June 22, 1881. (No model.)

To all whom it may concern Bc it known that I, WILLIAM D. CARTER, of Brooklyn, in the county of Kings and State of New York, have invented a new and Im- 5 proved Screw-Press;' and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specication.

Thisinvention is in the nature of an improvement in screw-presses; and the invention consists in a screw-press constructed to beused in connection with a paint can, and ,provided at one end of the screw thereof with a loosely-tit- 15 ting screw-cap, as is more-particularly hereinafter described.

In the accompanying sheet of drawings,Fig ure l represents a side view of my screwpress applied to a paint-can; Fig. 2, a cross-section 2o of same in the line a: m, Fig. 1; Fig. 3, an `un der side View of screw-cap.

Similar letters of referenceindicate like parts in the several figures.

This invention relates particularly to screwz 5 presses adapted to be used in connection with a paint-can with an interior diaphragm or plunger, so that the downward forcing of the plunger within the can will force the paint or other substance within the can out of a spigot i 3o near its bottom. The can, however, to which this press is especially adapted is one constructed with an opening, a, through the eenter of the diaphragm B,provided with a screwnozzle, G, which projects from this opening a 3 5 through the head ofthe can A. The material which the can is to contain is poured through the nozzle O into the can, and when lilled the diaphragm lB is on the surface of the material and immediately beneath the head of the can.

4o Now,when this can is lled withpaint or. other viscous substance it is necessary to force theY diaphragm B, which rests upon the surface ot the substance, downward in order to force the substance from a spigot, b, near the bottom of Thisis more conveniently done by a screw-press, D-that is, a press consisting of a screw-rod, E, with a hand-wheel, c, at one end, the rod passing through an arm, F, withl corresponding screw threads cut in it, and the rod having a cap, G, loosely secured to its lower end. This cap has formed in it screwthreads d, which correspond with the screwthreads e of the nozzle G. The rear part of the arm F of the press is formed with a jaw, H, and the under side of this jawis provided with a clamping-screw, I, with a clamp, f, at one end and a hand-wheel, g, at the other end.

Now, to employ this screw-press for the purpose of forcing down the diaphragmin the can, its jawH is placed so as to receive the edge ot' the table or shelf within it. The clamping-screw I is turned so as to clamp the press tightly to the table or bench. The screw-cap Gr is next screwed onto the projecting nozzle G, and the screw-rod E, by means of the hand-wheel c, is turned and forces downward the diaphragm B, to which the nozzle O is attached, pressing the paint or other substancewithin the can out of the spigot in such quantities as may be desired. This operation is continued until the can is emptied of its contents, when a reverse turningof the screw E draws up the diaphragm B again to the under side ofthe head of the can, when the can is ready for refilling.

Having thus described my invention, what 75 I claim as new, and desire to secure by Letters Patent, is-

1. A screw-press fora paint-can, constructed with a loosely-fitted screw-cap at one end of the screw-shaft thereof, and also with a jaw 8o and clamping-screw, as a new article of manufacture.

2. In a screw-press for a paint-can, a screwrod provided at one end with a loosely-fitting screw-cap, as and for the purpose described.

WM. D. CARTER.

Witnesses:

H. L. WATTENBERG, G. M. PLYMP'ION. 

